Fraction Calculator
Add, subtract, multiply and divide fractions and get the answer simplified, with a decimal equivalent.
Calculate with fractions easily
The Fraction Calculator adds, subtracts, multiplies, and divides two fractions and gives you the answer reduced to lowest terms, along with its decimal equivalent. Enter the numerators and denominators, pick an operation, and get an exact result instantly — no manual finding of common denominators required.
How fraction operations work
| Operation | Method |
|---|---|
| Add / Subtract | Find a common denominator, then add/subtract numerators |
| Multiply | Multiply numerators and denominators across |
| Divide | Multiply by the reciprocal (flip the second fraction) |
After the operation, the calculator divides the numerator and denominator by their greatest common divisor to simplify the result automatically.
How to use it
- Enter the first fraction's numerator and denominator.
- Choose + − × ÷.
- Enter the second fraction and read the simplified answer.
Why simplify fractions?
A simplified (or "reduced") fraction expresses the same value with the smallest possible numbers — 2/4 becomes 1/2. Simplified fractions are easier to read, compare, and use in further calculations. This tool always reduces the result and shows the decimal too, so you get the answer in the form you need.
Tips for fractions
- To add or subtract, the calculator handles the common denominator for you.
- Dividing by a fraction is the same as multiplying by its reciprocal.
- An answer with denominator 1 is a whole number.
- Use the decimal output when you need a quick approximate value.
Private and free
All calculations run in your browser — nothing is uploaded. The tool is completely free with no sign-up.
Frequently asked questions
Does it simplify the answer?
Yes. The result is always reduced to lowest terms, and the decimal equivalent is shown too.
How do I divide fractions?
Choose ÷. The calculator multiplies by the reciprocal of the second fraction, which is how fraction division works.
Can it handle negative fractions?
Yes. Enter a negative numerator and the sign is handled correctly in the simplified result.
Is it free?
Yes, completely free with no sign-up, running entirely in your browser.